Home / 2,126.92-2,936.90-2,018.20

Finding the Fourth Proportional to 2,126.92, 2,936.90 and 2,018.20

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Solution

The fourth proportional to 2,126.92, 2,936.90 and 2,018.20 is: 2,786.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.92 : 2,936.90 = 2,018.20 : x
  2. Step 2: Convert to fraction form
    2,126.92/2,936.90 = 2,018.20/x
  3. Step 3: Cross multiply
    2,126.92x = 2,936.90 × 2,018.20
  4. Step 4: Simplify right side
    2,126.92x = 5,927,251.58
  5. Step 5: Solve for x
    x = 5,927,251.58/2,126.92
  6. Step 6: Final answer
    x = 2,786.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.